CCNP - Cisco Certified Network Professional Practice Questions: Network Design Domain

Published: July 31, 2025 | 20 min read

Test your CCNP - Cisco Certified Network Professional knowledge with 10 practice questions from the Network Design domain. Includes detailed explanations and answers.

CCNP - Cisco Certified Network Professional Practice Questions

Master the Network Design Domain

Test your knowledge in the Network Design domain with these 10 practice questions. Each question is designed to help you prepare for the CCNP - Cisco Certified Network Professional certification exam with detailed explanations to reinforce your learning.

Question 1

What is the primary purpose of using a Virtual Routing and Forwarding (VRF) instance in network design?

A) To increase routing table size

B) To provide network segmentation

C) To enhance STP convergence

D) To simplify routing protocol configuration

Show Answer & Explanation

Correct Answer: B

Explanation: VRF is used to provide network segmentation on a single physical router by maintaining separate routing tables for different VRF instances. This helps in achieving logical network separation and increases network security. It does not increase routing table size or affect STP convergence.

Question 2

An enterprise wants to segment traffic between departments while maintaining high security. Which design approach should you use?

A) Implement VRF Lite

B) Apply ACLs on core routers

C) Use dynamic VLAN assignments

D) Configure multiple STP instances

Show Answer & Explanation

Correct Answer: A

Explanation: VRF Lite allows for traffic segmentation with logical separation, enhancing security without requiring separate physical networks.

Question 3

Which STP feature helps prevent a switch port from transitioning to the forwarding state if a BPDU is not received?

A) Root Guard

B) BPDU Guard

C) Loop Guard

D) PortFast

Show Answer & Explanation

Correct Answer: C

Explanation: CORRECT: Loop Guard prevents a port from transitioning to the forwarding state if BPDUs are not received, avoiding potential loops. Root Guard prevents the port from becoming a root port. BPDU Guard disables a port if a BPDU is received. PortFast allows ports to bypass certain states but does not prevent loops.

Question 4

A security audit has revealed unauthorized access attempts to your internal network. Which strategy would you implement to strengthen network access controls and prevent further incidents?

A) Deploy Access Control Lists (ACLs) at the core layer.

B) Isolate sensitive data on a separate VLAN.

C) Implement 802.1X authentication on all access ports.

D) Enable port mirroring for network traffic monitoring.

Show Answer & Explanation

Correct Answer: C

Explanation: 802.1X provides port-based authentication, enhancing access controls on network devices.

Question 5

In designing a network for IPv6, what is a major advantage of implementing Stateless Address Autoconfiguration (SLAAC) over DHCPv6?

A) Reduced complexity in configuration.

B) Better control over address assignment.

C) Improved support for mobile devices.

D) Enhanced security features.

Show Answer & Explanation

Correct Answer: A

Explanation: SLAAC allows devices to automatically configure their own IPv6 addresses without the need for a DHCP server, reducing configuration complexity and administrative overhead.

Question 6

Your company is experiencing OSPF routing loops in a multi-area setup. What is the most effective design change to prevent these loops?

A) Adjust OSPF hello and dead timers

B) Implement area-based stub configuration

C) Reconfigure OSPF cost on all interfaces

D) Enable OSPF summarization at area boundaries

Show Answer & Explanation

Correct Answer: D

Explanation: OSPF summarization at area boundaries reduces routing table size and prevents loops.

Question 7

In an SD-WAN deployment, what is the primary function of the control plane?

A) To enforce security policies

B) To manage data forwarding between sites

C) To establish and maintain the network topology

D) To optimize application performance

Show Answer & Explanation

Correct Answer: C

Explanation: CORRECT: The control plane establishes and maintains the network topology in an SD-WAN. Security policies are enforced by the data plane. Data forwarding is managed by the data plane. The control plane manages network topology. Application performance is optimized by the data plane and application-aware routing.

Question 8

In a large enterprise network, you are tasked with designing a VLAN deployment strategy. What is the main advantage of using VLAN Trunking Protocol (VTP) in this scenario?

A) Simplifies VLAN management by allowing centralized configuration

B) Enhances security by segregating traffic at Layer 3

C) Improves throughput by ensuring VLAN traffic is isolated

D) Provides dynamic IP addressing for all VLANs

Show Answer & Explanation

Correct Answer: A

Explanation: VTP allows for centralized VLAN management, simplifying configuration and consistency across switches.

Question 9

You are designing a VLAN architecture for a company with multiple departments. The company wants to minimize VLAN sprawl and improve security. Which design approach should you recommend?

A) Assign a single VLAN per department

B) Use a VLAN per floor with access control lists (ACLs)

C) Implement VLAN pooling across all switches

D) Utilize VLAN Trunking Protocol (VTP) in transparent mode

Show Answer & Explanation

Correct Answer: B

Explanation: Using a VLAN per floor with ACLs limits VLAN sprawl while allowing for centralized security policies.

Question 10

Which IPv6 addressing feature allows multiple devices to share the same IPv6 prefix while maintaining unique addresses?

A) Anycast

B) Multicast

C) EUI-64

D) Link-Local

Show Answer & Explanation

Correct Answer: C

Explanation: CORRECT: EUI-64 allows devices to create unique IPv6 addresses by using the MAC address to generate the interface ID. Anycast addresses are shared by multiple devices but not unique. Multicast addresses are used for group communication, not unique addressing. EUI-64 generates unique addresses from a shared prefix. Link-Local addresses are unique but not globally routable.

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About CCNP - Cisco Certified Network Professional Certification

The CCNP - Cisco Certified Network Professional certification validates your expertise in network design and other critical domains. Our comprehensive practice questions are carefully crafted to mirror the actual exam experience and help you identify knowledge gaps before test day.